Yaskawa F7 Drive Programming Manual - Manual (Page 138)

Programming 130
Torque limit is activated in both the speed and torque control when operating in open loop vector or flux vector control methods
(A1-02 = 2 or 3). If the multi-function analog input is programmed for “10: Forward Torque Limit”, “11: Reverse Torque
Limit”, “12: Regen Torque Limit”, or “15: FWD/REV Torque Limit”, the Drive uses the lower value of either L7-0x or analog
input torque limit.
Fig. 94 Torque Limit - 4 Quadrant Operation
The following block diagram shows the relationship between torque limit using parameter settings and torque limit using multi-
function analog inputs.
Fig. 95 Torque Limit Block Diagram
REV Run Regen
L7-04
Positive Torque Reference
Negative Torque Reference
FWD Motor Rotation REV Motor Rotation
REV Run Motor
L7-02
FWD Run Regen
L7-03
FWD Run Motor
L7-01
Quadrant 1 Quadrant 2
Quadrant 3 Quadrant 4
10: Fw d Torque Lim it
11: R ev Torque Lim it
12: R egen Torque Lim it
15: Torque Lim it
M ult-function A nalog Input
Term inal
A 2 or A 3
A
D
M in
M in
M in
M in
P ositive
torque
forw ard drive,
forw ard torque
f
r
reverse drive,
reverse torque
L7-01 Forw ard Torque Lim it
L7-02 R everse Torque Lim it
L7-03 Forw ard R egen T orque Lim it
L7-04 R everse R egen Torque Lim it
M in
M in
reverse positive regenerative torque
forw ard negative regenerative torque
M in: M inim um value priority circuit
M in
M in
M in
M in
M in
M in
175% of D rive rated current
SFS
SFS
SFS
SFS
rg
fg
C onstants
64 m s
Forw ard T orque Lim it
R everse Torque Lim it
Forw ard R egen Torque Lim it
R everse R egen Torque Lim it
Terminal
A2 or A3
Multi-function Analog Input
10:Fwd Torque Limit
11:Rev Torque Limit
12:Regen Torque Limit
15:Torque Limit
Positive
torque
M in
M in
forward drive,
forward torque
rg
fg
reverse positive regenerative torque
forward negative regenerative torque
M in:Minimum value priority circuit
reverse drive,
reverse torque
M in
M in
M in
M in
M in
M in
M in
M in
M in
M in
SFS
SFS
SFS
SFS
64 ms
Constants
L7-01 Forward Torque Limit
L7-02 Reverse Torque Limit
L7-03 Forward Regen Torque Limit
L7-04 Reverse Regen Torque Limit
175% of Drive rated current
Forward Torque Limit
Reverse Torque Limit
Forward Regen Torque Limit
Reverse Regen Torque Limit